Cooling arrangement for internal-combustion engines



March 22 9 192?.

Filed March 17, 1922 it possible to Patented Mar. 2,25, .1927.

[UNITED] smaon KIEnenn-rmiw; Assronon TO FRIED. knurr AKTIEN- CONRAD REGENBOGEN,

GESELLSGHAF'I GERMANIAVJEBFT, OF KIEL-GAARDEN, GERMANY.

COOLING ARRANGEMENT. m. rrrrnnnat-ooivnsusrron ENGINES.

Application filed March 17, 1922, Serial no. 544,535, and in Germany March 17, 1921.

It is already well-known with internal combustion engines of large dimensions to arrange" freely expansible water-cooled chambers on the side of the cylinder covers lying. towards the combustion roomthese chambers should satisfactorily answer their purpose--viz, to lead off the heat at that place,-they have to be made very thinwalled which isvery difiicult to be carried out with cast chambers. It is further neces sary that the walls of such chambers be of exactly the same thickness throughout, as otherwise the difference of material will cause heat-stresses in the walls which might produce cracks and easily endanger the entire plant.

The presentinvention has for its object to provide a water chamber construction by which the aforementioned drawbacks are obviated. This object is principally attained by composing the chambers ofseveral parts of pressed ingot iron or of steel casting or the like, each other by welding. This method makes produce a chamber which has an extraordinarily small and uniform wallthickness answering all practical needs.

Another feature-of the invention consists in that the means (anchors or the like) which serve to carry the may be used at the same time for feeding andleading-oif the cooling water, can eventually be directly welded to the chamber too so that packings between the chamber and cooling water conduits are dispensed with. With these .ends in View the invention consists in the arrangement, construction and combination of parts to be hereinafter described and particularly pointed out in the appended claim. .7 Some embodiments of the subject-matter of the'invention are illustrated, by way of example, in the accompanying drawing in which:

Fig. 1 shows a vertical longitudinal sec- 7 tion through a portion of the cylinder cover having a water chamber arranged'on its inner side,

Fig. 2 shows a similar view of amodifica-' tion, .Fig. 3 shows a similar view of another modification, and V 4 shows a similar view of a still further modification,

which are connected with chamber and which Fig. 5 is a section through the water chamber accordlng to Fig. 3, on ,the line ww of that figure.

The water chamber A according 'toFig. 1 fits into a lower recess of the cylinder cover B and 1s divided on a horizontal middleplane as is to be seen from said figure. The

two simple dish-Shaped portions a a? are made of ingot iron by pressing and welded to each other at tllGlI'OPPOSlIlg edges... The

welding places G are'markably indicated in the drawing; The upper portion of the water chamber is provided with openings for leading the cooling water. in and out,

said openings being provided with protruding edges with which the hollow anchors G are connected also by welding, the cooling medium passing through these anchors. The anchors C as well as the chamber A itself possess enough lateral play for enabhng them to expand freely in'all directions, The anchors are preferably disposed near the central portion of the chamber, s nce the expansion of the chamber itself 1s slightest at that point. If that cannot'be I done for one reason or the other, it will be advisable to increase the lateral play downwardly, as will be understood from"Fig. 1. Stufiing boxes mounted in the cover, form a tight joint between the anchors and the cover. The way taken by the cooling'water 1n entering'and leaving the water chamber is indicated by arrows. V

' The embodiment according to Fig. 2 of the drawings differentiates from that above described in that the anchor C which is welded to the chamber, is not directly constructed for the passage-therethrough of the cooling water, a special cooling Water pipe i E being used for this purpose which pipe extends through the anchor and which is fastened to the bottom of the chan'iber, for

instance by rolling it into the same; This arrangement possesses-the advantage-that, in case the water feeding pipe E gets leaky at its point of connection with the upper chamber wall, such leakage will become observable by an exit of water in upward di IGCUOII. Y

The embodiment according to Fig. 3

shows a water chamber consisting of two v A independent from each other portions A I and havlng each its own water inlet and outlet. The necessary openings for the passage of the water are disposed in an anchor each of which is mounted' approximately in the middle of the chamber portion to'be cooled. In order to secure a proper distribution of the cooling water; in; the respective. chamber portion, a pipe F is mounted in the Water admission opening, said pipe exten'din nearly untothe lio'tton-t out the chamber, so

that this chamber wall which is most endangered, is directly washed with fresh water. Besides, balile-walls may at will be provided in the interior of the chamber for ameliorating the guiding of the waterg In the portion lying at the right ofld 8,1 the anchors for suspending the chamber are be ing used" with this construction, same may be solid and likewise welded to the chamber.

It is remarked that it is well-known in internal combustion; engines; to arrange wrought iron protective plates in front of the cast iron cylinder cover towards the combustion ro'mmthese plates being united with the cover to an nnseparable whole by welding, shrinking or the like; 7

Claim: 7 v

water chamber, of the character stated com rising several separately cooled portions which, are each composedof a plnrai ity' of weldedmm, saidl port-ions being in dipelidel'it i 'r'olnv eacli other and" adapted to,

eXpaIid freely with relation to each other and. the parts; snrrounding them. 7

The foregoing specification signed at Hambi1rg;,Germa1iy, this 16th day of March,

CONRAD REG-EN'BO'GEN; 

